KITTERY, Maine — The nation’s top transit official is in Maine to announce funding for the expansion of express commuter bus service at Maine’s Portsmouth Naval Shipyard and New Hampshire’s Pease International Tradeport.

Federal Transit Administrator Peter Rogoff will join U.S. Navy and local officials Wednesday to announce the service expansion aimed at making it easier for civilian and military personnel to get to work at the shipyard, located in Kittery, and the Pease business and aviation industrial complex in Portsmouth.

Rogoff will be announcing funding for the expanded service.